accessory accomplice act in concert act together adjunct affiliate alter ego amalgamate analogon analogue apply archduchy archdukedom associate band band together be in cahoots be in league bedfellow bind body politic bracket brother brother-in-arms buffer state bunch bunch up cabal captive nation cement a union centralize chieftaincy chieftainry city-state close copy close match club club together coact coadjutor coalesce cognate cohort collaborate collaborator colleague collude colony combine come together commonweal commonwealth companion compatriot compeer complement comrade concert concord concur confederate confrere congenator congener connect consociate consolidate consort conspire cooperate coordinate correlate correlative correspondent counterpart country county couple crony do business with domain dominion draw a parallel duchy dukedom earldom empery empire equate equivalent federalize federate fellow fellow member free city friend fuse gang gang up get heads together get together go in partners go in partnership go partners grand duchy hang together harmonize hold together hook up hook up with identify image interrelate join join forces join fortunes with join in join together join up join up with join with keep together kindred spirit kingdom land league league together like likeness link make common cause mandant mandate mandated territory mandatee mandatory marry mate merge nation nationality near duplicate obverse organize pair pair off parallel parallelize partner pendant picture play ball polis polity possession power principality principate protectorate province pull together puppet government puppet regime put heads together realm reciprocal reciprocate relate relativize republic satellite second self seneschalty settlement side similitude simulacrum sister soul mate sovereign nation stand together stand up with state such suchlike sultanate superpower tally team up team up with team with territory the like of the likes of throw in together throw in with tie tie in tie in with tie up tie up with toparchia toparchy twin unionize unite unite efforts unite with wed work together